1.21

Improvements:

• Support and testing for clang 19 and gcc 14
• Partial support for thread sanitizer
• Dramatically simplified build system
• Removed numerous unused build configs
• Fixed a minor performance regression from the last release
• Removed hand-imlemented atomics in favor of C11 atomics and existing intrinsics
• Removed unmaintained support for eurekas
• Removed unmaintained support for distributed Qthreads
• Removed various unmaintained debugging and profiling code paths
• Dropped support for numerous compilers that no are no longer available
• Dropped support for various unmaintained architectures like Tilera, Itanium, Alpha, MIPS, and Sparc
• Dropped support for various OS configs that we don't test like Solaris, HPUX, and AIX
• Removed several unmaintained/untested threadqueue and topology detection options

1.21rc1

1.21 release candidate

1.20

Improvements:

• Improve and expand CI testing
• Fix compilation and testing for an expanded range of platforms, compilers, and operating systems
• Fix numerous sanitizer errors
• Remove some unused/outdated code

1.20rc1

Candidate for 1.20 release.

This release includes numerous bugfixes to make qthreads build and run on a wider variety of platform/build environment combinations. Various warnings and sanitizer errors were also fixed.

qthreads-1.20rc1.tar.gz

1.19

New Features:

• Add a mechanism to reset the default task spawn order
• Enable the use of HWLOC_GET_TOPOLOGY_FUNCTION

Improvements:

• Fix fast context swap on ARM64
• Mature support of ARM64 for Apple MacOS and Linux
• Improvements to testing
• Improvements to configure scripts
• Remove unused files
• Make version numbering consistent

Notes:

• Software repository migrated to new location

1.19RC

New Features:

• Add a mechanism to reset the default task spawn order
• Enable the use of HWLOC_GET_TOPOLOGY_FUNCTION

Improvements:

• Fix fast context swap on ARM64
• Mature support of ARM64 for Apple MacOS and Linux
• Improvements to testing
• Improvements to configure scripts
• Remove unused files
• Make version numbering consistent

Notes:

• Software repository migrated to new locaton

1.18

New Features:

• Add support for Apple Mac Mx hardware
• Add spinlock-based implementation of locking API
• Add support for recursive locks

Improvements:

• Fix synchronization primitives by adding correct fencing
• Use stdatomic fence acquire and release for >=C11
• Increase default stack size from 4kB to 16kB
• Fix hang in qt_blocking_subsystem_internal_stopwork on qthreads_finalize
• Enable QTHREAD_ARMV8_A64 context swap on Apple Mx hardware
• Add distributable package gen script

1.17

Improvements:

• Add GitHub actions for CI testing
• Add missing include files in the binders topology layer
• Handle SIGSEGV during configure testing to avoid user exposure
• Add --with-hwloc-symbol-prefix configure option
• Add errno preservation from system calls
• Fix compilation errors on M1 MAC computers
• Remove Loxley experimental schedulers

1.16

Improvements:

• Add support for Spack testing (spack test run qthreads)
• Add support for hwloc2.x (minimal required version is hwloc1.5)

Documentation:

• User guide for basic Qthreads usage (see userguide subdirectory for LaTex and included code source files)

1.15

New Features:

• Add experimental support for Thread Local Storage and new Condition variable initializers
• Non-blocking FEB functions are now exposed (e.g. qthread_readFF_nb), other runtimes (e.g. MPI) require access.

Improvements:

• Remove the deprecated register keyword
• Fix automake machinery so that "make dist" works as expected